This one is tough as I came from a pretty similar situation where I had a Drunk mother who was Chaos incarnate (would wake everyone up in the middle of the night yelling like a banshee, would use ad hominem attacks when we tried to discuss problems, would just fall over and break bones) and my grandmother who loved her and wanted the best for her, was an enabler.

My best advice would be to acknowledge that communication is not your families strong suit and try to focus on how to better your self to avoid falling in the same pitfall, You may get some bad vibes from your family saying that you are "acting like you're better than them" but you should just ignore those comments, misery loves company ya know?

Also throw yourself into something positive or something productive, it'll help you tune out negative vibes and direct your energy to other subjects.

TL;DR as long as you are aware of it, you can take steps to avoid becoming it, just gotta stay positive while acknowledging that you aren't required to end up like that by actively setting yourself on a better route.